Got the impala suspension on. It doesn't really sit lower, guess the old ones were really sagging. Ill get a pic up a little later.
Here's the springs, about 2.5" shorter.
I even indexed them correctly this time. Car sits level. When I put these in the 90, it didn't sit level because I didn't index.

Re: 84 Coupe Deville Project

As you might have read, my 84 Sedan has had the front and rear sway bars from a caprice cop car installed. I also used orange urethane sway bar bushing links on the front. I, like you, drive a bit aggressive and wanted a flatter cornering car. Stiffer springs and shocks will not make it corner flatter, fatter sway bars will. I think the new springs you installed were necc. because to old ones were weak. Be careful on shock selection, you dont want to stiffen the ride and loose that Cadillac smoothness on the interstate. Its been an interesting read so far, yours is the same color as mine just 2 less doors! Love the wheels! what year are they from? I adjusted the arm on the level ride sensor to raise the back about an inch. On mine, you can just see the whole whitewall standing back 20 feet. Adjusting that arm to raise the rear static height also added about 10 lb of air to the shocks so its less soft but not stiff. great thread!

Thanks y'all. It's almost done except the interior. I do have the urathane sway bar bushings and a bigger bar in the back but stock up front. I drove it around a little today and it stays pretty flat but I haven't really hit the gas hard in the corner. I'm not too worried about a caddy like ride, its pretty loud and I plan on putting it down the track a few times. Carnut, do you know what size your front sway bar is?

Re: 84 Coupe Deville Project

Originally Posted by csbuckn

Got the impala suspension on. It doesn't really sit lower, guess the old ones were really sagging. Ill get a pic up a little later.
Here's the springs, about 2.5" shorter.
I even indexed them correctly this time. Car sits level. When I put these in the 90, it didn't sit level because I didn't index.

I may replace the springs on my 78 Coupe. What is indexing? And, has anyone used springs from Jamco? I would like to get my car a little lower, and they advertise custom made springs wound to anywhere from a one to three inch drop from stock. By the way, love your build, and the speed in which you built it puts the rest of us to shame.

Indexing is when you place the end of the coil between the holes in the lower control arm. To make sure the lowest/highest part of the spring mates with the highest/lowest part of the control arm. Something like that.

I owe the speed of the build to my girl, she stays in with the kids while I go in the garage at night.

Re: 84 Coupe Deville Project

My gear box is fairly new. I did not change it. The sway bars were fatter than mine so, no, I didn't check build sheets. The fat rear bar appears to be the same on Buick Estate wagons as well. I am leaving the springs alone. I want the Cadillac ride, but I want it to corner like a Cop car!